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Emulsion paraffin water repellent for fiber board

A technology of emulsified paraffin and water repellent, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems affecting the application range and service life, strength reduction, etc., and achieve small particle size, good water resistance, and uniform film formation Effect

Active Publication Date: 2009-12-09
GUANGXI FENGLIN WOOD IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Emulsified paraffin and solid paraffin are widely used waterproof agents in the fiberboard industry. In the production of fiberboard, waterproof treatment is an essential process. Otherwise, because the wood material is a porous organic matter, the board will expand and deform after absorbing moisture. , the strength is reduced, affecting its application range and service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1: Add 564 kg of paraffin, 113 kg of water, 16 kg of sodium lauryl sulfate, heat to 75 ° C, stir well, add 10 kg of Sipan-60=10 kg, 8 kg of monoglyceride, and keep warm for 20 minutes.

[0020] Step 2: Add Pingpingjia 0 = 8 kg, add Tween-80 = 15 kg, keep warm at 80°C for about 50 minutes, until it becomes thick, and then add about 22 kg of water. Continue to heat.

[0021] Step 3: Add 90 kg of water, keep the temperature at 60° C. for 15 minutes, and then add 4 kg of polyvinyl alcohol.

[0022] Step 4: Slowly add 113 kg of water and keep warm at 70°C for 15 minutes.

[0023] Step 5: Slowly add 113 kg of water and keep warm at 65°C for 15 minutes.

[0024] Step 6: Slowly add 113kg of water and keep warm at 65°C for 15 minutes

[0025] Step 7: Cool to below 45°C and discharge.

Embodiment 2

[0027] Step 1: Add 627 kg of paraffin, 118 kg of water, 16 kg of sodium lauryl sulfate, heat to 65 ° C, stir well, add 12 kg of Sipan-60, 10 kg of monoglyceride, and keep warm for 20 minutes.

[0028] Step 2: Add Pingpingjia 0 = 11 kg, add Tween-80 = 18 kg, keep warm at 70°C for about 60 minutes, until it becomes thick, and then add about 23 kg of water. Continue to heat.

[0029] Step 3: Add 94 kg of water, keep the temperature at 70° C. for 15 minutes, and then add 5 kg of polyvinyl alcohol.

[0030] Step 4: Slowly add 118 kg of water and keep warm at 65°C for 15 minutes.

[0031] Step 5: Slowly add 118 kg of water and keep warm at 60°C for 15 minutes.

[0032] Step 6: Slowly add 118 kg of water and keep warm at 80°C for 15 minutes.

[0033] Step 7: Cool to below 45°C and discharge.

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PUM

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Abstract

The invention provides an emulsion paraffin water repellent for a medium density fiber board, which is prepared by taking solid paraffin and water as main materials, lauryl sodium sulfate, SPAN-60 and monoglyceride as emulsifiers, peregal 0 and tween-80 as catalysts and polyvinylalcohol as a colloid protecting agent. The water repellent comprises the following components in portion by weight: 40 to 45 portions of paraffin, 45 to 50 portions of water, 1.0 to 1.5 portions of lauryl sodium sulfate, 1.5 to 2.5 portions of SPAN-60, 0.5 to 1.0 portion of monoglyceride, 0.5 to 1.0 portion of peregal 0, 1.0 to 1.5 portions of tween-80, and 0.1 to 0.5 portion of polyvinylalcohol. The water repellent is unnecessarily melted or dissolved by a solvent when used; in addition, the water repellent also has the advantages of even film forming, small granularity, good dispersibility, good storing stability, easy combination with water solutions or emulsions of other materials for use, safety, high efficiency, economy and convenience, and can meet the requirements of the water repellent on low paraffin consumption and good water resisting property in the fiber board industry.

Description

technical field [0001] The invention relates to a waterproofing agent for medium density fiberboards, in particular to an emulsified paraffin waterproofing agent for medium density fiberboards. Background technique [0002] Medium density fiberboard is a product of comprehensive utilization of wood resources and the main raw material of furniture. It is made of wood fiber or other plant fiber, with a certain proportion of adhesive and waterproofing agent, and pressed under heat and pressure. The formed board has high mechanical strength and waterproof performance. Emulsified paraffin and solid paraffin are widely used waterproof agents in the fiberboard industry. In the production of fiberboard, waterproof treatment is an essential process. Otherwise, because the wood material is a porous organic matter, the board will expand and deform after absorbing moisture. , the strength is reduced, affecting its application range and service life. [0003] Emulsified paraffin water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/18
Inventor 王高峰黄庆平陈文渊
Owner GUANGXI FENGLIN WOOD IND GRP CO LTD
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